Afghan Presidential Candidate Ashraf Ghani Garners Strong Support in the North

Some Voters Laud Choice of Running Mate

MAZAR-E-SHARIF, Afghanistan—Afghan presidential candidate Ashraf Ghani's choice of Uzbek warlord Abdul Rashid Dostum as his running mate is looking increasingly like a masterstroke, with Mr. Ghani's supporters confident of a strong showing in the country's north as voting-fraud accusations mount.

With counting continuing amid claims of ballot stuffing and intimidation, Mr. Ghani's deputy campaign manager, Abdul Momin Makret, said his team was certain of making it into the runoff among the two top vote-getters. About 80% of...